# Pleated Skirt Calculator

URL: https://speedycalculator.com/calculators/everyday-life/pleated-skirt/
Last updated: 2026-10-25

> The pleated skirt calculator works out the fabric width and length for a knife- or box-pleated skirt and the waistband, from your waist, number of pleats, skirt length, hem and seam allowances.

## Inputs

- Pleat type
- Waist (in, cm)
- Number of pleats
- Skirt length (in, cm)
- Hem allowance (in, cm)
- Seam allowance (in, cm)
- Waistband height (finished) (in, cm)
- Waistband overlap (in, cm)

## Results

- Fabric for one pleat
- Skirt fabric width
- Skirt fabric length
- Waistband length
- Waistband width to cut
- Visible width of each pleat at the waist

## Formula

```
Fabric per pleat = waist ÷ pleats × 3 (knife) or × 3 (box, with two folds)
Skirt fabric width = fabric per pleat × pleats + 2 × seam allowance
Skirt fabric length = length + hem + seam allowance
Waistband = (waist + overlap + 2 × seam) × (2 × band height + 2 × seam)
```

## Explanation

Pleats fold extra fabric behind the visible part of the skirt. A knife pleat is a single fold in one direction; a box pleat folds fabric away on both sides of a flat panel. The more pleats and the deeper they are, the more fabric you need – a fully pleated skirt typically uses three times the waist measurement.

### How to use the Pleated Skirt Calculator

- **Pleat type**
- **Waist**
- **Number of pleats**
- **Skirt length**
- **Hem allowance**
- **Seam allowance**
- **Waistband height (finished)**
- **Waistband overlap**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Choose the pleat type, enter the waist, number of pleats, desired skirt length, hem, seam allowance, waistband height and overlap.

### Tips

- Measure over thin clothing with a soft tape held snug but not tight, and keep the tape level all the way round.
- Take each measurement twice; if you are between sizes, the larger size is usually the safer choice.
- Size charts vary by brand and country – check the maker's own chart when it is available.
- For sewing projects, pre-wash fabric before cutting and buy 10% extra for shrinkage, pattern matching and mistakes.

### Common mistakes to avoid

- Mixing inches and centimetres between the tape and the size chart.
- Forgetting seam and hem allowances when cutting fabric.
- Measuring an old, stretched garment instead of your body.

### Inputs explained

FieldWhat to enterPleat typeChoose one: Knife pleats (3× fabric), Box pleats (3× fabric), Shallow knife pleats (2× fabric)WaistUnits: in, cmNumber of pleatsA numberSkirt lengthUnits: in, cmHem allowanceUnits: in, cmSeam allowanceUnits: in, cmWaistband height (finished)Units: in, cmWaistband overlapUnits: in, cm

### What each result means

- **Fabric for one pleat** = [Waist]÷[Number of pleats]×round([Pleat type])
- **Skirt fabric width** = [Fabric for one pleat]×[Number of pleats] + 2×[Seam allowance]
- **Skirt fabric length** = [Skirt length] + [Hem allowance] + [Seam allowance]
- **Waistband length** = [Waist] + [Waistband overlap] + 2×[Seam allowance]
- **Waistband width to cut** = 2×[Waistband height (finished)] + 2×[Seam allowance]
- **Visible width of each pleat at the waist** = [Waist]÷[Number of pleats]

### Example values

How the main result changes when **Waist** changes and everything else stays at the example values above:

Waist (in)Skirt fabric width (in)1443.32164.32885.335106.342127.356169.3

## Worked example

Inputs — Pleat type: Knife pleats (3× fabric); Waist: 28 in; Number of pleats: 16; Skirt length: 20 in; Hem allowance: 1.5 in; Seam allowance: 0.625 in; Waistband height (finished): 1.25 in; Waistband overlap: 1 in.

Results — Fabric for one pleat = 5.25 in; **Skirt fabric width = 85.3 in**; Skirt fabric length = 22.1 in; Waistband length = 30.2 in; Waistband width to cut = 3.75 in; Visible width of each pleat at the waist = 1.75 in.

## FAQ

**How much fabric for a pleated skirt?**
About three times your waist measurement in width for full knife or box pleats, plus seams.

**How do I space pleats evenly?**
Divide the waist by the number of pleats for the visible width, and mark each pleat at three times that on the fabric.

**What fabric holds pleats best?**
Wool, polyester blends and other fabrics that take a crisp press; cotton pleats soften with washing.

**What formula does the Pleated Skirt Calculator use?**
Fabric per pleat = waist ÷ pleats × 3 (knife) or × 3 (box, with two folds).